In older versions of Ubuntu with Compiz, I liked using Super + arrow key (up, down, left, right) to immediately go to a different desktop wall. I set up the same shortcut keys in Ubuntu 12.04 with CompizConfig Settings Manager, but now I must press the Enter key to commit the desktop wall choice.
For example, I want Super + Right to jump to the right virtual desktop without pressing the Enter key to commit the change.
This may be related to question: https://askubuntu.com/questions/126117/alt-tab-in-12-04-requires-pressing-enter-to-select-app-can-i-disable-that but that is a problem with the application switcher, this is about the desktop switcher.